Response of physiology and biochemistry of grasses to heavy metal stress

With the rapid development of industrialization in China, heavy metals, the basic production materials of industrialization, are constantly released into the biosphere and then are transferred to animals and humans through the food chain, which is harmful to the health of human being. Grasses distributes widely and are resistant to heavy mentals, some of which are hyperaccumulator of heavy mentals. This study summarized the advance in heavy metals influencing germination rate, biomass, root activity stress of grasses and their resistance mechanisms, including proline, antioxidant enzymes, glutathione, isolation, mycorrhiza and salicylic acid. The response mechanisms of Hyperaccumulator grasses to several important heavy metals (Cd, Zn, Cu, Cr, Pb and Hg ) were also clarified in this study. Lastly, this study proposed the important fields and direction of resistance metabolism in the future.